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Add ability to configure the Max-Forwards header in the dialplan, as well as in

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sip.conf configuration for the channel and for devices.

The Max-Forwards header is used to prevent loops in a SIP network. Each intermediary,
like SIP proxys and SBCs, decrement this counter and detects when it reaches zero,
at which point the SIP request is nicely killed in a SIP-friendly way.

Review: https://reviewboard.asterisk.org/r/778/

Thanks to dvossel for the review and good advice.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@276951 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Olle Johansson
2010-07-16 10:00:58 +00:00
parent 65203b12dd
commit e129b31fc6
5 changed files with 55 additions and 4 deletions
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doc/tex/channelvariables.tex
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@@ -933,6 +933,7 @@ ${SIPDOMAIN} * SIP destination domain of an inbound call (if appropriate
${SIPFROMDOMAIN} Set SIP domain on outbound calls
${SIPUSERAGENT} * SIP user agent (deprecated)
${SIPURI} * SIP uri
${SIP_MAX_FORWARDS} Set the value of the Max-Forwards header for outbound call
${SIP_CODEC} Set the SIP codec for an inbound call
${SIP_CODEC_INBOUND} Set the SIP codec for an inbound call
${SIP_CODEC_OUTBOUND} Set the SIP codec for an outbound call